Closure for bottles of paper and other materials



17,.1939. I A. A. Ml JRlSON CLOSURE FOR BOTTLES OF PAPER AND OTHERMATERIALS Filed N ov. 29, 19:57

I I 5 2 7. W

Patented Jan. 1 7, 1939 t PATENT oFrics CLOSURE FOR BO'I'ILES OF PAPERAND OTHER MATERIALS Alekander A. Murison, Arlington, Va", assignor toThe Purity Paper Vessels Company, Baltimore, Md.

Application November 29, 1937, Serial No. 177,141

4 Claims.

My invention relates to-closures for bottles of paper or other materialand has for its object to provide a cap closure for paper milk bottlesso constructed as to be applied to the paper bottle before it leaves thefactory at which it is made and before it is filled with millet" Milkbottles of paper while extensively used are found objectionable in' somelocalities by the authorities-having supervision of milk supply becauseof the fact that the paper bottles supplied to the dairyman in opencondition, as has been usual heretofore, afford opportunity for entranceof bacteria through their open mouths. While glass bottles as deliveredto the dairyman are usually open andafiord opportunity for en'- tranceof bacteria, glass bottles may be washed and so freed from bacteriabefore being filled with milk. Paper bottles cannot be so washed.

In order to make it possible to use paperbottles for milk dairymenhavein some cases made the bottles at, the dairy so as to avoidcontamination which is possible when open bottles are transported asubstantial distance, but it has been found impractical to load thedairy with the expense of making the bottles. O

Under conditions as they are it is recognized as esseIRi'al'totlEiise ofpaper bottles for milk that the bottles shall not be subject to thedanger of contamination after they are manufactured and before theyreach the dairy at which they are to be filled. I

It is the particular object of the present invention to provide aclosure for milk bottles which will avoid any danger of contamination intransporting from the place of manufacture to. the place where they areto be filled with milk.

With the. above stated object and other objects hereinafter explained inview my invention consists in and comprises the construction hereinafterset forthfand claimed.

Referring to the drawing:

Figure 1 is a longitudinal sectional view of the upper end of a papermilk bottle in the condition in which it has heretofore usually beentransported from'the place of manufacture to the dairy where it is to befilled;

Figure 2 is a. similarflvlew showing the sealing cap as applied when thebottle is made.

-Figure 3 is a top plan view of the sealing cap shown in. Figure 2.

Figure 4.1s a view similar tov Figures 1 and 2,

but showing the bottle with the disc of the sealing cap' removed topermit the bottle to be filled.

Figure 5 is a view similar to Figures 1,12 and 4, but showing the outersealing cap applied.

semen form.

Figure 6 is a view similar to Figure 5 but showing a sealing diskinstead of a cap.

In the drawing! indicates the body of a paper bottle for milk or otherliquid and is shown as of conical form though it may be of other than 2indicates a stifienlng ring applied to the bottle neck with its outeredge portion crimped onto the edge of the bottle and with an inwardlyextending flange 3 at its lower end. This is a usual construction and inthe w usual practice a sealing cap applied after the bottle is filledrests with its central disc on ledge 3 and has its outer end portioncrimped over thecrimp at the outer edge of ring 2. The bottle as shownin Figure 1 is in practice usually 15 transported from its place ofmanufacture with its mouth open and has been found objectionable becausethe open mouth may permit bacteria or othercontamination to enter.

In carrying out my invention a sealing cap 4 of waxed material isapplied to the mouth of. the bottle immediately after the bottle is madeand while the wax of the bottle and of the cap is warm and plastic thusensuringpompleteness of viilo'sufe beforeit is eizposed to possiblecontamination. This sealing cap 4 is usually of waxed paper but may beof metal such as aluminum and is shown of usual form comprising a ring 5and a disc 6 at the lower end of the ring which when in position restson a flange 3 of ring 2. In this disc 6 isformed a short distance fromits edge an incision 1 parallel with the periphery of the disc but notextending about the entire circumference so that the portion of the discwithin the incision 1 at points 8, 8, is held by suflicient unseveredmaterial to hold the inner portion of the disc in place until forciblydisplaced.

After incision I is made disc 6 is coated with 'parafflne or othersealing material adapted to close the incision 1 against the passage ofair in or out..

. The bottle as shown in Figure .2'is'ready for transportation to thedairy without possibility of entrance into it of any bacteria or othercontaminating substance. 1

I when the bottle is to be' filled slight pressure 7 on one side of thedisc 6 will breakthe sealing' material closing the incision I and" willpermit v theinner portion of the disc to be removed so as .to leavethemouth open as shown in Figure 4 for admission of milk.

After the bottle is filled anouter sealing cap ll of commonly used formas shown in Figure 5comprlsing ring with disc I! at its lower u end maybe placed in position and be held in position by crimping its outer edgeover the crimped Outer edge of inner sealing cap 4, but the sealing maybe effected by a disk I! which rests on the ledge of the sealing cup 4with its edge against ring 5 as shown in Figure 6.

While my invention is particularly adapted and intended for use withpaper milk bottles, it may be used for closing receptacles of paper orof other material.

portion adapted to be crimped over the outerend of the metallic ring,said disk-like portion being so cut as to be readily frangible along theline of the inner edge of the flange at the inner end of the metallicring.

2. In a closure for the filling opening of a receptacle of non-metallicmaterial, a ring of metal extending about the interior of the openinghaving an inwardly extending flange at the inner end of the ring andhaving its outer end portion outwardly turned toengage the edge of theopening, a cap of non-metallic material comprising a ring portionadapted to fit inside the metallic ring, a disk-like portion adapted torest on the flange of the metallic ring, and a retaining portion adaptedto be crimped over the ou er of the metallic ring, said disk-likeportion being so cut as to be readily frangible along the line of theinner edge of the. flange at the inner end of the metallic ring, and acoating of Wax-like material closing the cut.

3. A device as set forth in claim 1-, including a flanged outer sealingcap of non-metallic material comprising a flanged portion adapted to fitinto the ring portion of the inner sealing cap with its disk-likeportion resting on the rim portion of the inner sealing cap and havingits flange portion crimped over the crimped edge of the inner sealingcap.

4. A device as set forth in claim 2, including a flanged euter'sealingcap of non-metallic material comprising a flanged portion adapted to fitinto the ring portion of the inner sealing cap with its disk-likeportion resting on the rim portion of the inner sealing cap and havingits flange portion crimped over and around the crimped edge of the innersealing cap.

ALEXANDER A. MURISON.

